129results about How to "Strong moisture resistance" patented technology

A high-effective catalyst used for removing indoor formaldehyde at normal temperature includes a carrier, a noble active component, and an additive. The carrier is a mesoporous oxide including at least one of Al2O3, TiO2, SiO2, cerium oxide, cobalt oxide and manganese oxide; the active component includes a less amount of at least one of noble metals Pd, Pt, Au and Ag; the additive is at least one of Na, K, Fe, Co, Ce and Ni. The catalyst can completely convert the formaldehyde into CO2 and H2O at normal temperature under relative humidity of 50-90%. The catalyst has high catalytic-oxidizing activity and strong anti-moisture capability and is suitable for removal of the formaldehyde in a sealed or a semi-sealed space.

The invention discloses PVC/PE/PVCD solid medicine using composite hard sheet manufacturing technology. It includes the following steps: unreeling for PVC basis material; corona treatment for its surface; coating adhesive; drying; unreeling for PE film; compositing the PVE basis material and PE film; solidifying; dying; corona treatment for the PE film surface; coating adhesive; coating PVCD glue; drying to form PVCD film; repeating coating the PVCD glue on the PE film; drying; rolling, solidifying to form PVCD film again; patting cut and detecting.

The invention relates to a multi-layer voltage-sensitive resistance and relative production, wherein it has the types as internal electrode and end electrode inside the insulated layer; the internal electrode and end electrode are connected directly; and the end electrode and the base board are directly connected; and the production comprises: preparing slurry, laminating layers, slicing, discharging adhesive, sintering, surface treating the insulated slurry of base board, producing two end electrodes and electrically plating. The invention insulated treats the surface of multi-layer sheet voltage-sensitive resistance without end electrodes, without water adsorption, and it plates nickel and tin on the surface of end electrode, to improve the welding property and the welding reliability, with lower cost and batch production.

The invention provides electro-slag re-melting slag, consisting of the following components in percentage by weight: 20%-25% of fluorite, 35%-40% of bauxite, 30%-35% of high-calcium lime, 3%-8% of fused magnesite and 5%-10% of silica. A preparation method of the electro-slag re-melting slag comprises the following process steps of checking, finely grinding, proportioning, balling, drying, electrically smelting, deslagging, cooling, crashing, checking, packaging and storing. The electro-slag re-melting slag provided by the invention can be used for reducing the introduction of hydrogen, oxygen and nitrogen, and has the advantages of ensuring the surface smoothness of cast ingots and low power consumption.

The invention provides a thermoplastic modified polyethylene material suitable for electric insulators, wherein the thermoplastic modified polyethylene material is prepared from the following raw materials by weight: 50-65% of polyethylene, 2-6% of a toughener, 15-20% of an inorganic filler, 15-20% of a bromine-based flame retardant, 1.5-5% of a synergistic flame retardant, 0.6-1.4% of a stabilizer, 0.5-1% of a coupling agent, and 0.2-1% of a lubricant, the raw materials are stirred and mixed in a high-speed mixer, and the mixture is extruded and granulated by a twin-screw extruder to obtain the product. According to the present invention, the thermoplastic modified polyethylene material has advantages of excellent comprehensive performance, stable flame retardancy, low density and smoothsurface property, is the thermoplastic material, can be recovered and reused, and meets the environmental protection trends; and with the application of the thermoplastic modified polyethylene material in the preparation of insulator product, the process is simple, the production cycle is short, the production environment is free of dust, and the product can be recovered and reused after the usedlife is achieved and the product is rejected so as not to cause white pollution.

The invention discloses a processing method of a high-moisture-resistance metallized polypropylene film capacitor, and relates to the technical field of capacitors. The method comprises the followingsteps: S1, film coating: carrying out low-temperature plasma corona treatment on the surface of a polypropylene film so that a dangling bond can be formed on the surface of the polypropylene film, andthen plating a metal coating on the surface of the polypropylene film; S2, metal spraying: performing metal spraying treatment on the core (a metal spraying material is a zinc-aluminum wire), and coating the surface of the core with an aluminum foil adhesive tape after metal spraying is completed; S3, energizing: automatically testing the core on an energizing machine; S4, welding: automaticallyfeeding the core to a welding machine through a vibrating disc, and then performing the welding operation after the distance between the welding joints is adjusted to be equal to the pin distance of the capacitor. The invention has the beneficial effects that the capacitor manufactured through the method can meet the requirements of the service life test of 85 DEG C, 85% of RH, 1-time of rated voltage and 1000 hours, and the capacity attenuation of the capacitor is smaller than 10%.

The invention discloses an adhesive-film-winding automatic packaging machine for a floor group. The adhesive-film-winding automatic packaging machine comprises seven parts, that is, a vertical frame (1), rotary assemblies for the floor group, a clamping and location assembly for the floor group, an adhesive film cutting assembly, an adhesive film barrel reciprocating motion assembly, a floor conveying system and a control system PLC, wherein the rotary assemblies for the floor group are fixed to the two sides of the vertical frame (1); the clamping and location assembly for the floor group is located around the floor group to be packaged; the adhesive film cutting assembly is located between an adhesive film barrel (19) and the floor group; and the adhesive film barrel reciprocating motion assembly is located at the front side of the vertical frame (1). The invention discloses special equipment capable of automatically packaging the floor group composed of six floors. The equipment has the advantages of being high in automation degree, high in production efficiency, low in production cost, and capable of lowering the labour intensity.

The invention provides a polyvinyl chloride (PVC)-based wood plastic composite and a preparation method thereof. The PVC-based wood plastic composite is mixed by the following raw materials by weight percent: 32-51% of PVC, 1-3% of stabilizer, 1-2% of processing additive, 2-3% of impact modifier, 2-3% of lubricant and 40-60% of wood flour. The preparation method comprises the following steps: mixing the raw materials according to the formula ratio, using a conical twin-screw for mixing, cooling and solidifying, and cutting to obtain the finished product. Compared with the common wood plastic material, the prepared molding-grade PVC-based wood plastic composite has the advantages of high wood flour filling volume, good high temperature fluidity and the like and can be directly used for molding production; and the formed wood plastic product has good comprehensive physical-mechanical performance and appearance, strong wood feeling and obvious cost advantage.

The invention discloses a controller shell for an electric vehicle. A main body of the controller shell is an aluminum shell; two ends of the aluminum shell are respectively sealed by a front baffle plate and a back baffle plate; a blower is arranged on the front baffle plate or the back baffle plate; a circuit board is fixedly connected to an inner wall of the aluminum shell; heat radiation air channels are formed on a side wall of the aluminum shell along the length direction of the aluminum shell; the inner side surface of the side wall, which is provided with the heat radiation air channels, of the aluminum shell is connected with heat radiation aluminum strips; a wind current turning structural member is arranged between the back baffle plate and the aluminum shell; one side of the wind current turning structural member, is provided with the blower, and the other side of the wind current turning structural member is provided with air outlet holes; and the air outlet holes are opposite to the heat radiation air channels. The external cold air is absorbed by the blower, and the heat radiation aluminum strips which are internally embedded in the shell are subjected to forced cooling heat radiation through the heat radiation air channels on the inner side of the shell, so that the problems of incapability of dissipating heat from the shell in time due to temperature rise in a natural heat radiation way and incapability of isolating internal and external environments in the conventional air cooling heat radiation way are solved, and good waterproof and moistureproof functions are realized.

The invention discloses a salt mist-resistant moisture-resistant catalyst for removing carbon monoxide at low temperature, in particular a catalyst and a preparation method thereof, and belongs to the technical field of chemical engineering. The catalyst is characterized by consisting of a carrier and active metals, wherein the carrier is a mixture of alumina, manganese oxide, cerium zirconium composite oxide of CexZr1-xO2 and a small amount of adhesive; a mass ratio of the alumina to the manganese oxide is (1-5):1; the cerium zirconium composite oxide is 1 to 10 mass percent of the carrier, and x is more than or equal to 0.5 and less than or equal to 1; the adhesive is 0.5 to 5 mass percent of the carrier; and the active metals are Pt and Pb, wherein the Pt is 0.1 to 1 mass percent of the carrier, and the Pd is 0.3 to 2 mass percent of the carrier. The invention has the advantage that: the prepared catalyst is low in cost, high in low temperature catalytic activity, high salt mist resistance and moisture resistance, and high stability.

The invention relates to the field of architectural decoration material and its post-contour machining technology, concretely a method for surface directly coating beaverboard of middle density. The invention is indicated constructing continuous coating lines of priming lacquer, emulation grain and top-coat, taking the beaverboard of middle density as basic materials on the continuous coating lines, and continuously coating the basic materials to form into coating of the priming lacquer, emulation grain and top-coat. With employing this method, the aforementioned coatings can dry and form film in 0.5-2 seconds, the coating speed is quickly, and the quality is excellent without environment pollution.

The invention discloses a high pressure resistant load leading-out end structure and a sealing-in craft based on metal ceramic. The high pressure resistant load leading-out end structure comprises insulators, leading-out rods and a base plate (7), wherein the insulators comprise four coil insulators (5) and at least four load insulators (6), the leading-out rods comprise at least four load leading-out rods (3) and four coil leading-out rods (4), the insulators are made of ceramic materials, the coil leading-out rods (4) are symmetrically distributed in the center of the base plate (7), the at least four load leading-out rods (3) are symmetrically distributed on two sides of an X axis of the base plate (7), the leading-out rods are arranged on the base plate (7) in a sleeved and sealed mode through the insulators, two ends of each leading-out rod are respectively higher than two ends of each insulator, and the two ends of each insulator are higher than the base plate (7).

The present invention relates to humidity-proof heat sealer compositions having low specific gravity, which comprise a polyvinyl chloride resin, a filler, a moisture absorbent, a plasticizer, an adhesion promoter, an additive, and so forth, for use in automotive steel sheet joints or outside panel joints. When compared with conventional sealer compositions, the present compositions provide improved humidity resistance, as well as improved fuel efficiency.